gold mine

noun

1. a mine yielding gold.

2. a source of great wealth or profit, or any desirable thing.

3. a copious source or reserve of something required.

   a gold mine of information about antiques.

gold mine

noun

1. a place where gold ore is mined

2. a source of great wealth, profit, etc

Other Word Forms

• gold-miner noun
• gold-mining noun

Word History and Origins

Origin of gold mine¹

late Middle English word dating back to 1425–75

Idioms and Phrases

A rich, plentiful source of wealth or some other desirable thing, as in That business proved to be a gold mine, or She's a gold mine of information about the industry. [First half of 1800s]